yaxis labels with custom spacing

[Thomas Ilnseher]

I want to plot a bode diagram (phase)

the x axis is logarithmic, and the y axis is linear, from -90° to +90°. 

I do a axis([10, 1000000, 90, -90]);
but the result is that the y-axis is labeled with: 80, 60, 40, 20,
0, ....
It would be better if the axis was labeled like:

90 45 0 -45 -90. Is there any possibility to achieve that ?

Thanks!



-- 
Thomas Ilnseher <address@hidden>